13
Installation Instructions
EXHAUSTING THE DRYER (cont.)
Using exhaust longer than specified length will:
• Increase the drying times and the energy cost.
• Reduce the dryer life.
• Accumulate lint, creating a potential fire hazard.
The correct exhaust installation is YOUR
RESPONSIBILITY.
Problems due to incorrect installation are not
covered by the warranty.
The MAXIMUM ALLOWABLE length of the exhaust
system depends upon the type of duct, number of turns,
the type of exhaust hood (wall cap) and all conditions
noted on the chart.
• Internal elbows added for side or bottom vent
conversions must be included in the total elbow count.
• Any elbow greater than 45° should be treated as a 90°
elbow; one elbow of 45° or less may be ignored.
• Two 45° elbows will be treated like one 90° elbow.
• For the side exhaust installations, add one 90° elbow to
the chart.
• For every additional 90° elbow, reduce the allowable
vent system length by 10 feet.
• When calculating the total vent system length, you
must add all the straight portions and elbows of the
system (including the transition duct).
EXHAUST LENGTH
RECOMMENDED MAXIMUM LENGTH
Exhaust Hood Types
Recommended
Use only for short run
installations
4" DIA.
4"
4" DIA.
4" DIA.
2-1/2"
No. of 90° Elbows
Rigid Metal
Rigid Metal
0
120 Feet
90 Feet
1
100 Feet
75 Feet
2
85 Feet
65 Feet
3
70 Feet
55 Feet
4
60 Feet
45 Feet
5
55 Feet
35 Feet
•
DO NOT
bend
or collapse
ducting.
Use elbows
if turns are
necessary.
•
DO NOT
use
excessive
exhaust
length. Cut
duct as short
as possible.
•
DO NOT
crush duct
against
the wall
.
•
DO NOT
set dryer
on duct
.
•
DO
cut duct as short
as possible and
install straight into
wall.
•
DO
use elbows
when turns are
necessary.
Elbows
